p111dom
Established Member
My problem is this. Setting up 90 degrees on the table or mitre saw is easy. Engineers square on to the sliding table fence, adjust, tighten and there you go. My table saw probably out by 5-10 thou over the distance of the blade according to the calliper. This equates to around half a mil over a 3 foot length which for me is good enough. My mitre saw even less.
However I'm working on a project that requires gluing up octagons and I'm having trouble with the fit. Cuts on the table saw are probably out by 0.05 of a mil over say 100mm widths but 8 pieces cut at 22.5 degrees requires 16 cuts which means a this 0.05 becomes 0.8 of a mil at the end. The same with the mitre saw. You adjust the fence square with the blade on my saw but still if you’re out even slightly cuts like this show up any inaccuracies straight away. I could use an engineers 45 degree square but think I would still have the problem. Am I missing an easier more accurate way of setting up 45 cuts on my machinery? .
(Appologies for mixing imperial and metric units)
However I'm working on a project that requires gluing up octagons and I'm having trouble with the fit. Cuts on the table saw are probably out by 0.05 of a mil over say 100mm widths but 8 pieces cut at 22.5 degrees requires 16 cuts which means a this 0.05 becomes 0.8 of a mil at the end. The same with the mitre saw. You adjust the fence square with the blade on my saw but still if you’re out even slightly cuts like this show up any inaccuracies straight away. I could use an engineers 45 degree square but think I would still have the problem. Am I missing an easier more accurate way of setting up 45 cuts on my machinery? .
(Appologies for mixing imperial and metric units)